<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="120px"
      v-loading="formLoading"
    >
      <el-form-item label="课程名称" prop="courseName">
        <el-input
          :style="{ width: '50%' }"
          v-model="formData.courseName"
          placeholder="请输入课程名称"
        />
      </el-form-item>
      <el-form-item label="课程封面" prop="courseCoverUrl">
        <upload-img v-model="formData.courseCoverUrl" />
      </el-form-item>
      <el-form-item label="课程描述" prop="courseDetail">
        <el-input
          :style="{ width: '50%' }"
          type="textarea"
          v-model="formData.courseDetail"
          placeholder="请输入课程名称"
        />
      </el-form-item>
      <el-form-item label="课程标签" prop="tags">
        <el-tag
          v-for="tag in formData.tags"
          :key="tag"
          class="mx-1"
          closable
          :disable-transitions="false"
          @close="handleCloseTag(tag)"
        >
          {{ tag }}
        </el-tag>
        <el-input
          v-if="tagInputVisible"
          ref="TagInputRef"
          v-model="tagInputValue"
          class="ml-1 w-5"
          :style="{ width: '8rem' }"
          placeholder="请输入标签"
          size="small"
          @keyup.enter="handleTagInputConfirm"
          @blur="handleTagInputConfirm"
        />
        <el-button v-else class="button-new-tag ml-1" size="small" @click="showTagInput">
          + 添加标签
        </el-button>
      </el-form-item>
      <el-form-item label="排序" prop="sortNo">
        <el-input
          :style="{ width: '50%' }"
          type="number"
          v-model="formData.sortNo"
          placeholder="请输入排序数值"
        />
      </el-form-item>
      <el-form-item label="课程状态" prop="courseStatus">
        <el-radio-group v-model="formData.courseStatus">
          <el-radio :label="1">启用</el-radio>
          <el-radio :label="2">禁用</el-radio>
        </el-radio-group>
      </el-form-item>
      <el-form-item label="是否推荐" prop="isRecommend">
        <el-radio-group v-model="formData.isRecommend">
          <el-radio :label="false">否</el-radio>
          <el-radio :label="true">是</el-radio>
        </el-radio-group>
      </el-form-item>
      <el-form-item label="课程有效天数" prop="validDays">
        <div class="flex flex-col w-full">
          <el-input
            :style="{ width: '50%' }"
            type="number"
            v-model="formData.validDays"
            placeholder="请输入课程有效天数"
          />
          <div class="text-gray-400">有效天数填0，则永久有效</div>
        </div>
      </el-form-item>

      <el-form-item label="课程价格(分)" prop="price">
        <el-input
          :style="{ width: '50%' }"
          type="number"
          v-model="formData.price"
          placeholder="请输入价格"
        />
      </el-form-item>
      <el-form-item label="虚拟销量" prop="virtualSalesCount">
        <el-input
          :style="{ width: '50%' }"
          type="number"
          v-model="formData.virtualSalesCount"
          placeholder="请输入虚拟销量"
        />
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script setup lang="ts">
import * as CourseApi from '@/api/course/index'
import UploadImg from '@/components/UploadFile/src/UploadImg.vue'
import useFormData from '@/hooks/ec/useFormData'

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改

const formRef = ref() // 表单 Ref

const { formData, formRules, resetFormData } = useFormData<CourseApi.CourseUpdateDTO>({
  courseName: {
    defaultValue: undefined,
    rules: [{ required: true, message: '课程名称不能为空', trigger: 'blur' }]
  },
  courseCoverUrl: {
    defaultValue: undefined,
    rules: [{ required: true, message: '课程封面不能为空', trigger: 'change' }]
  },
  courseDetail: {
    defaultValue: undefined,
    rules: [{ required: true, message: '课程描述不能为空', trigger: 'change' }]
  },
  courseStatus: {
    defaultValue: 1,
    rules: [{ required: true, message: '课程状态不能为空', trigger: 'change' }]
  },
  isRecommend: {
    defaultValue: false,
    rules: [{ required: true, message: '是否推荐不能为空', trigger: 'change' }]
  },
  sortNo: {
    defaultValue: 0,
    rules: [{ required: true, message: '排序不能为空', trigger: 'change' }]
  },
  validDays: {
    defaultValue: 365,
    rules: [{ required: true, message: '服务有效天数不能为空', trigger: 'blur' }]
  },
  tags: {
    defaultValue: []
  },
  price: {
    defaultValue: undefined,
    rules: [{ required: true, message: '价格不能为空', trigger: 'blur' }]
  },
  virtualSalesCount: {
    defaultValue: undefined,
    rules: [{ required: true, message: '虚拟销量不能为空', trigger: 'blur' }]
  }
})

/** 重置表单 */
const resetForm = () => {
  resetFormData()
  formRef.value?.resetFields()
}

/** 打开弹窗 */
const open = async (type: string, id?: string) => {
  dialogVisible.value = true
  dialogTitle.value = t('action.' + type)
  formType.value = type
  resetForm()
  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      formData.value = await CourseApi.get(id)
      console.log(formData.value)
    } finally {
      formLoading.value = false
    }
  }
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

// 标签编辑
const tagInputVisible = ref(false)
const tagInputValue = ref('')
const handleTagInputConfirm = () => {
  const inputValue = tagInputValue.value
  if (inputValue) {
    !formData.value.tags && (formData.value.tags = [])
    formData.value.tags.push(inputValue)
  }
  tagInputVisible.value = false
  tagInputValue.value = ''
}
const TagInputRef = ref()
const showTagInput = () => {
  tagInputVisible.value = true
  nextTick(() => {
    TagInputRef.value.focus()
  })
}
const handleCloseTag = (tag: string) => {
  const tags = formData.value.tags
  const index = tags?.indexOf(tag)
  index !== undefined && tags?.splice(index, 1)
}

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  if (!formRef) return
  const valid = await formRef.value.validate()
  if (!valid) return
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value
    console.log('创建课程：', data)
    if (formType.value === 'create') {
      // await CourseOpenApi.createCourse(data)
      message.success(t('common.createSuccess'))
    } else {
      // await CourseOpenApi.updateCourse(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}
</script>
